Bug 1945345 (CVE-2021-29646) - CVE-2021-29646 kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c
Summary: CVE-2021-29646 kernel: improper input validation in tipc_nl_retrieve_key func...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-29646
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1945346 Red Hat1950093 Red Hat1951005 Red Hat1951006 Red Hat1955086
Blocks: Embargoed1945347
TreeView+ depends on / blocked
 
Reported: 2021-03-31 17:41 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-04-17 21:16 UTC (History)
43 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw buffer overflow in the Linux kernel TIPC protocol functionality was found in the way user uses protocol with encryption enabled. A local user could use this flaw to crash the system.
Clone Of:
Environment:
Last Closed: 2021-11-09 15:49:36 UTC

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4140 0 None None None 2021-11-09 17:22:04 UTC
Red Hat Product Errata RHSA-2021:4356 0 None None None 2021-11-09 18:24:33 UTC

Description Guilherme de Almeida Suckevicz 2021-03-31 17:41:01 UTC 
An issue was discovered in the Linux kernel before 5.11.11. tipc_nl_retrieve_key in net/tipc/node.c does not properly validate certain data sizes.

Reference and upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0217ed2848e8538bcf9172d97ed2eeb4a26041bb
Comment 1 Guilherme de Almeida Suckevicz 2021-03-31 17:41:53 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1945346]
Comment 2 Fedora Update System 2021-04-02 00:16:57 UTC 
FEDORA-2021-41fb54ae9f has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 3 Fedora Update System 2021-04-02 01:14:11 UTC 
FEDORA-2021-6b0f287b8b has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 4 Fedora Update System 2021-04-02 01:21:15 UTC 
FEDORA-2021-2306e89112 has been pushed to the Fedora 33 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 6 Product Security DevOps Team 2021-04-08 11:35:09 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-29646
Comment 21 errata-xmlrpc 2021-11-09 17:22:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4140 https://access.redhat.com/errata/RHSA-2021:4140
Comment 22 errata-xmlrpc 2021-11-09 18:24:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4356 https://access.redhat.com/errata/RHSA-2021:4356
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